Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/artifacts/states/ReferenceGaugeState.java @ 7471:fff862f4ef76
Experimental caching of datacage recommendations. The respective hook is called a lot and running the datacage over and over again when loading data can be expensive. So the generated recommendations are cached for some time.
Hopefully this improves the overall speed of loading data from the datacage.
author | Sascha L. Teichmann <teichmann@intevation.de> |
---|---|
date | Wed, 30 Oct 2013 15:26:21 +0100 |
parents | af13ceeba52a |
children |
line wrap: on
line source
/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.artifacts.states; import java.util.Collections; import java.util.List; import org.w3c.dom.Element; import org.dive4elements.artifacts.Artifact; import org.dive4elements.artifacts.CallContext; import org.dive4elements.artifacts.common.utils.XMLUtils; import org.dive4elements.river.model.Gauge; import org.dive4elements.river.model.River; import org.dive4elements.river.artifacts.D4EArtifact; import org.dive4elements.river.utils.RiverUtils; /** * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class ReferenceGaugeState extends DefaultState { public static final String DATA_NAME = "reference_gauge"; @Override protected Element[] createItems( XMLUtils.ElementCreator cr, Artifact artifact, String name, CallContext context) { River river = RiverUtils.getRiver((D4EArtifact) artifact); List<Gauge> gauges = river.getGauges(); Collections.sort(gauges); int num = gauges != null ? gauges.size() : 0; Element[] opts = new Element[num]; for (int i = 0; i < num; i++ ) { Gauge g = gauges.get(i); String gaugeName = g.getName(); long officialNumber = g.getOfficialNumber(); opts[i] = createItem( cr, new String[] { gaugeName, String.valueOf(officialNumber) }); } return opts; } @Override protected String getLabelFor( CallContext cc, String name, String value, String type ) { if (name.equals(DATA_NAME)) { try { long number = Long.valueOf(value); Gauge gauge = Gauge.getGaugeByOfficialNumber(number); if (gauge != null) { return gauge.getName(); } } catch (NumberFormatException nfe) { // do nothing } } return super.getLabelFor(cc, name, value, type); } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :